They grew
other kinds of cells in the medium, such as human skin cells, but these induced no such attraction in the worms.
Stem cells not only bolster their own numbers but also
become other kinds of cells through a process called differentiation, thereby keeping an organ populated as mature cells die off.
Giacca says this could be a valuable therapeutic intervention after heart attacks in humans, as long as the microRNAs don't
cause other kinds of cells to divide, possibly causing cancers (Nature, DOI: 10.1038 / nature11739).
Hertzano and her colleagues used mice whose auditory hair cells glow with a green fluorescent protein, allowing the cells to be identified
from other kinds of cells.
Stem cells hold tremendous promise for medicine; their ability to metamorphose into
other kinds of cells make them useful for repairing injuries — from heart attacks to brain damage.
«Scientists have thought that fibroblasts are terminally differentiated, meaning they can't adopt the fate
of other kinds of cells; but our study suggests this may not be entirely true,» said Eric Ubil, PhD, a postdoctoral fellow at UNC and first author of the Nature study.
She recently showed that the nanopillared PMMA surface produced with this curved mold retains the ability to kill bacteria without
harming other kinds of cells in the eye.
The results make it clear, says stem - cell biologist Amy Wagers, who headed the study, that these hematopoietic stem cells can do a lot for blood diseases but not for diseases
affecting other kinds of cells.
How by the time we are in school we have about 100 trillion
other kind of cells already in us and that when gathering up all the bacteria in our bodies it would equal about three pounds.
The new technique also offers the hope that
other kinds of cells can live a second life.
Transplanted stem cells can differentiate into just about
any other kind of cell, including neurons to potentially reconnect a severed spinal cord and repair paralysis.
Preliminary tests show that the newly created cells can develop into nerve cells, heart cells, or
any other kind of cell in the body.
This type of cell, first developed about five years ago, has the ability to turn into
any other kind of cell in the body.
Instead, the culprits are two
other kinds of cells that reside in fat tissue: preadipocytes and visceral adipose tissue macrophages (ATMs).